412442521621 has 8 divisors (see below), whose sum is σ = 444283488824. Its totient is φ = 380617928640.

The previous prime is 412442521619. The next prime is 412442521633. The reversal of 412442521621 is 126125244214.

It can be written as a sum of positive squares in 4 ways, for example, as 1190940100 + 411251581521 = 34510^2 + 641289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 412442521621 - 2¹ = 412442521619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412442521691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4041210 + ... + 4142011.

It is an arithmetic number, because the mean of its divisors is an integer number (55535436103).

Almost surely, 2^412442521621 is an apocalyptic number.

It is an amenable number.

412442521621 is a deficient number, since it is larger than the sum of its proper divisors (31840967203).

412442521621 is a wasteful number, since it uses less digits than its factorization.

412442521621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8187111.

The product of its digits is 30720, while the sum is 34.

Adding to 412442521621 its reverse (126125244214), we get a palindrome (538567765835).

The spelling of 412442521621 in words is "four hundred twelve billion, four hundred forty-two million, five hundred twenty-one thousand, six hundred twenty-one".